Free access article

A&A 421, 399-405 (2004)
DOI: 10.1051/0004-6361:20040244

Search for low energy in correlation with the 8 events observed by the EXPLORER and NAUTILUS detectors in 2001

M. Aglietta¹, P. Antonioli², G. Bari², C. Castagnoli¹, W. Fulgione¹, P. Galeotti¹, M. Garbini², P. L. Ghia¹, P. Giusti², F. Gomez¹, E. Kemp³, A. S. Malguin⁴, H. Menghetti², A. Porta¹, A. Pesci², I. A. Pless⁵, V. G. Ryasny⁴, O. G. Ryazhskaya⁴, O. Saavedra¹, G. Sartorelli², M. Selvi², D. Telloni¹, C. Vigorito¹, L. Votano⁶, V. F. Yakushev⁴, G. T. Zatsepin⁴ and A. Zichichi<sup>2

1</sup>  IFSI - CNR, Torino, University of Torino and INFN-Torino, Italy
²  University of Bologna and INFN-Bologna, Italy
³  University of Campinas, Campinas, Brazil
⁴  Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia
⁵  Massachusetts Institute of Technology, Cambridge, USA
⁶  INFN-LNF, Frascati, Italy

(Received 11 February 2004 / Accepted 15 March 2004)

Abstract
We report on a search for low-energy neutrino (antineutrino) bursts in correlation with the 8 time coincident events observed by the gravitational waves detectors EXPLORER and NAUTILUS (GWD) during the year 2001. The search, conducted with the LVD detector (INFN Gran Sasso National Laboratory, Italy), has considered several neutrino reactions, corresponding to different neutrino species, and a wide range of time intervals around the (GWD) observed events. No evidence for statistically significant correlated signals in LVD has been found. Assuming two different origins for neutrino emission, the cooling of a neutron star from a core-collapse supernova or from coalescing neutron stars and the accretion of shocked matter, and taking into account neutrino oscillations, we derive limits to the total energy emitted in neutrinos and to the amount of accreting mass, respectively.

Key words: neutrinos -- gravitational waves

Offprint request: W. Fulgione, fulgione@to.infn.it

© ESO 2004

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